It’s been a while since I’ve seen a front with this kind of temp differential roll through here. The two biggest of my life that I can remember were one in Jan of 77. I got to witness that one take temps from 50 to 8 in two hours. That’s the one that produced snow rollers. Only time in my life I’ve ever seen those. Anyone who doesn’t know what they are should look that up and then imagine them laying around literally everywhere. But the most memorable for me was the Jan 85 front. I think that front was more prolific on the west side of the mountains. I remember that about 11 pm on Saturday it rolled in with a significant line of snow squalls. The temp at onset was about 30. When I woke the next morning the temp was -9 and never reached zero that day. By Monday morning the temp was -26. Don’t think I’ll ever forget that one.